I’m trying to generate a report showing email activity for each mailbox in our tenant, to see how many items were sent or received in the past 180 days. The plan is to aggregate this data to find out which locations are the most/least active in using email.

Although the M365 reports can do this, it only includes user mailboxes so I’m missing out a big chunk of information from shared mailboxes, which is skewing the data since a lot of users would use these instead of their own mailbox.

Is there any way to get this data? It only seems possible to get mailbox size or folder statistics which is only a point in time figure.

​I’m trying to generate a report showing email activity for each mailbox in our tenant, to see how many items were sent or received in the past 180 days. The plan is to aggregate this data to find out which locations are the most/least active in using email. Although the M365 reports can do this, it only includes user mailboxes so I’m missing out a big chunk of information from shared mailboxes, which is skewing the data since a lot of users would use these instead of their own mailbox. Is there any way to get this data? It only seems possible to get mailbox size or folder statistics which is only a point in time figure.  Read More

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